Apparatus for molding castings for radiators, boilers, and the like



June 13, 1933. Q AlRAGHl' 1,913,356

APPARATUS FOR MOLDING CASTINGS FOR RADIATORS, BOILERS, AND THE LIKE Filed April 23, 1950 4 SheetsSheet 1 i 1; l h.

. INVENTR' CesaneA z'rqyl'a' ATTORN EY$ June 13, 1933. c. AIRAGHI I 1,913,356

APPARATUS FOR MOLDING CASTINGS FOR RADIATORS, BOILERS, AND THE LIKE Filed April 23, 1930 4 Sheets-Sheet 2 u (0W f 1-4 1 L-A Ill l INVENTOR CeSaneAiray/w 3 MMM'M ATTORNEY June 13; 1933. c, MRAGH. I 1,913,356

APPARATUS FOR MOLDING CASTI-NGS FOR RADIATORS, BOILERS, AND THE LIKE Filed April 23. 1930 4 Sheets-Sheet a BY a 4 W ezw ATTORNEYS June 13, 1933. c. AIRAGHI 1,913,356 APPARATUS FOR KOLDING CASTING-5 FOR RADIATORS, BOILERS, AND THE LIKE Filed April 23, 1930 4 $hB6t$-$h69t 4 t CIIDQ i lbw-amon- CeaarvAiray/ii \J/ MMMM ATTORNEYs Patented June 13, 1933 UNITED STATES PATENTOFFICE CESARE AmAenr, F GEN A, ITALY, Assrenon 'ro Annnar 'r. o'r'ro & sons, or NEW yonx, n. Y., A conroRAmoNor NEW YORK similar members, and for 1 bers in one unit.

a APPARATUS non MOLDING. cAs'rrNGs FOR nanIA'roirs, noI Ens, ND THE LIKE Application filed April 23,1930, Serial The present invention relates to an improved apparatus for molding simple ormultiple element radiators, boilers and other. casting these mem The apparatus can also be utilized for the molding of different and separate groups of radiators, boilers or. castings of the kind above referred to. Merely as an illustra tion, the invention will be described in a specific form particularly adaptedto the molding and casting of radiators.

As one feature of my invention I provide a pat-tern plate having one side correspondingto the shape and conformation of one face of an element to be cast, and the other side corresponding to the shape and conformation of the other face of a similar element. This plate is so mounted that it may be easily and quickly moved into operative positionin respect to either of two stationary pattern plates and clamped in place.

Other important features, objects and advantages will be pointed out hereinafter or will be apparent from a consideration ofthe specific forms illustrated and described.

In the accompanying drawings there are shown for the purpose of illustration, two forms of the present invention. i

In these drawings: V

Fig. 1 shows a front view of one form of device for forming flask moldings.

Fig. 2 shows a side view of the device of Fi .1. y

Fig. 3 is a section taken along line III-III of Fig. 2. e

Fig. 4 shows a front view of the flasks assembled for. casting operations.

Fig. 5 shows a side View, partly in section, of the arrangement shown in Fig. 4.

Fig. 6 showsa front view of another form of molding device.

Fig. 7 is a side view of the device shown in Fig. 6, and

Fig. 8 is a plan view of a portion of the device shown in Fig. 7. r

In a preferred embodiment of my im' proved apparatus I employ two types of flasks of different heights, the shorter ones servingfor the molding of the intermediate No. 4469188; wean Italy Maya, 1929.

Way that it separates the group of shorter flasks relating to oneradiator from the group of 1 the analogous flasks relating to the successive radiator. For forming a mold corresponding to an end element of a first radiator of a series, a higher flask than the others will be employed with the use of the same two pattern plates,i. e. the pattern of the movable pattern plate on the side relating to an end element and one ofthe two substantially stationary pattern plates. Only the mold formed on one side corresponding to the end element will be used for producing the end face of the radiator. On the contrary however, when a flask relating to the other end face of the first radiator and to the first face of the successive radiator is required, one will act inthe same way by utilizing the two molds obtained in the flask.

These flasks willbe arranged on asuitable support and will be so disposed that the first will bear against a closing plate, the second against the first flask, and so on. The last flask relating to the end of the first radiator constitutes the beginningof the second radiator or second group, and so on, up to the last flask of thelast block or radiator to be cast. The latter flask will be fitted against a. closing plate which is analogous to the first closing plate above referred to.

The two closing plates are formed with parts capable of receiving tie rods for fas tening the flasks together, and parts for supporting the ends and intermediate portions castingin a vertical direction prevents the 1 n cores from deflecting and moving out of aligned position, and causes the molds to be more easily filled with melted metal.

Two devices for carrying out my invention are provided. One device is designed to prepare the molding in the end flasks of the element group and the intermediate ones, and the other designed to effect the proper assembly, connection and support of the flasks in the position suitable for casting.

The first device presents a pair ofstandards, ea ch provided witha substantially stationary pattern plate. These plates are alternately subjected to the action of a compression device. This first device also presents a double faced pattern plate, movable to permit either one of its faces to be positioned opposite either one of the two substantially stationary pattern plates, and in proper position with a flask to form molds on opposite sides of said flask. The stand ards also present means capable of sustaining and fixing the exact position of the flasks as they are disposed on the standards, and designed to cooperate with one of the. faces of the aforesaid movable plate at a time.

The flasks are open at the top for introducing the loam therein and for permitting the formation of the tap or pouring holes. The standards are provided with means, capable of supporting the flasks thereon and of holding the Whole quantity of loam necessary for the flasks, prior to the molding. Such means will also serve to support the quantity of loam necessary for permitting the complete and exact molding of the flask by means of the aforesaid compression device.

The second device is designed to hold in vertical position the different flasks and the cores therein in succession, as well as to fasten said flasks together so as to permit casting to be carried out.

The improvements of the present invention permit the simultaneous molding of oneor more of the flasks; the simultaneous molding of both faces of'the flasks; the use of flasks of different sizes on the same molding machine; proper casting even if the flasks, when coupled together and mounted for casting operation, are not exactly vertical; and the obtainment of a better separation of the slag within the feed box.

The first of the foregoing advantages has been attained in practice by providing, in addition to the press plate shown in the first form illustrated in this application, other additional plates which are so supported that they can be brought against the outer face of a flask fitted to one of the standards, and against which another flask can be applied. The second of the aforesaid advantages has been attained, whereby the press plate and the aforesaid additional plate or plates are made to press against the flask faces to be molded, said means being mechanically controlled.

The last two advantages have been attained by providing a substantially horizontal conduit passing through from end to end of the coupled flasks, and by providing a sole feed box in communication with said conduit, and. causing this conduit to communicate with the molds to be filled.

The aforesaid devices offer special advantages of rapidity, of exaotitude of performance, of saving in material, and of improved workmanship.

The specific form of the device shown in Figs. 1 to 3 inclusive, includes a base 1 having two standards 2, each of which bears a pattern plate 8 and 8. Each of the right hand and the left hand standards is provided with a piston 6 mounted in a cylinder 6 adapted to receive a liquid under pressure through an inlet 6. Mounted on the base is a pivot 4 on which is mounted a movable arm 10 adapted to be moved into position 10 or 10 shown in Fig. 3. On the outer end of said arm is mounted a vertical pivot 10 rotatable about its axis and carrying a rotatable plate 3. This plate 33 carries two pattern plates 8 and 8, the plate 8 serving for the end elements of the radiator group, while the plate 8 is similar to the pattern plates 8 and 8", fixed to the standards. The four patterns carried by the four plates are indicated by 14:, 14, 14; and 14", respectively. The frames 9 and 9 for supporting the loam are yieldably supported on the standards of the machine, and two other similar frames 9 and 9 are fixed to the rotatable plate.

The machineis provided with two types of flasks. The flask 12 of one type serves for the molding of the intermediate radiator elements, while the flask 12 of the second type is about one and two-thirds times high as the plate of the first type, and is adapted for forming the molds for the end elements. A flask of the type 12 is mounted on the arms 13 of the machine. In bringing the cooperating parts together guiding pins (of usual type) enter the holes 5. The frame for supporting the loam, as for instance the frame 9 or 9, is disposed against said flask 12.

The rotatable plate 3 is rotated about the pivot 4 and also about the pivot 10", so as to present the pattern 14 or 14 to the flask 12 according to whether it is desired to provide the end element with legs or not. The rotatable plate and the loam supporting frame 9 or 9 are caused to bear against the flask 12. The tie rods 11 are moved into position between spaced lugs 15 so that bosses 16 engage said lugs. The flask 12 is filled with loam from any suitable means as for instance the funnel '17. The valve (not shown) of each cylinder 6 is opened, thus causing the piston 6 to shift in the direction of the arrow 18, thereby compressing the is i loam within the flask 12' At the same time, care should be taken to see that the plane 19 of the pattern plate fits closely to the plane 20 of the flasln During the compression operation, the loam supporting frames in contact with the flask 12, reacting against suitable yielding. springs, shift, thus permitting the planes 19 and 20 to come together. The valve of the hydraulic cylinder 6 is then closed and the exhaustvalve (not shown) is opened, causing the pistonltoretrocedeby the action of the springs 21. The plate carrying arm 10 is turned to withdraw it from theicooperating standard and the flaskis removed by slipping it along the arms 13. The

flask is then placed ona pair of spaced supports23 (Figs. 4 and thisflask being provided, forthat purpose, with lugs 24. The supports 23 carry at each end a closing plate 25 which in turn carries the twotubes 26 for supporting and centering the cores 27.

1 The rotatable plate 3 is so movably mount ed that after the aforesaid first molding takes place with the flask 12 the plate may be moved in position opposite the other standard, and molding operation continued with the flask 12 already mounted thereon.-

The work proceeds in the same way, with the sole difference that the'plate 31nust be rotated 180 to present the other pattern thereon to the standard. 1 As to the head flasks, where the radiator element must not be provided with legs and for which it is necessary to leave theadditional metal for the hubs,it is convenient to apply on the hubs of the pattern elementa split ring which leaves on the molding an impression corresponding to metal required. 1 r

The cores are formed in the usual way. In

this connection, the sole variation resides in the gas outlet holes which must have the. same diameter as the supporting tubes.

. The other elements shown bythe drawings the additional are of theusual type and therefore they do not require a particular illustration The flasks mounted as shown in Figs. f and 5, are ready for the casting.

Referring particularly tothe' embodiment is fitted with one or more articulatediarms 28, and 28". at the end of which is mounted a press plate 29 carrying on each of its two faces a portion 30' of the pattern to be used. The aforesaid fitting and the sizes of the arms are such that the pattern platecan be brought opposite to the first flask 12 support ed on the standards of the machine. A second flask 30 may be supported in position on the standard on the side of the pattern plate 29 opposite theflask 12.

. In the embodiment shown in Figs. 6, 7 and 8, the pressplate 3 must be shiftable to effect that necessary for the embodiment shown in illustrated in Figs. 6, 7 and 8, the machine a compression substantially greater than Figs. 1 to 5,owingto. the fact that said compressioniis designedto effect, by means of a loam frame 9 carried by the pressplate 3, the compression of the loam in a flask 30 and the flask 12, these flasks being separated by the plate 29. These members must be moved against the pattern on the standard of the machine, which, by means of a loam frame 9 applied thereto, provides the quantity of loam necessary for the compact filling of the second flask of the group, i. e. of the flask12..

to the base of the machine pass through openings extending in the direction of the arrow 34. Nuts are screwed to the studs 36 to lock the plate 31 in desired position.

The articulated systems 28 and 28 are supported on the machine by means of a plate 31 which moves between the guides in the direction of the arrow 3 1". The plate 31' is fixed. in position by means of the studs 36 screwed to the machine and passing through the slots 35" elongated in the direction of the arrow 34.

Instead of providing a pouring hole for each flask, each flask presents, according to the present invention, hole, the various flasks coupledto each other having their holes aligned to form a substantially horizontal conduit capable of being connected at the upper portion and atone or more points to the feed boxes of the metal, while said conduit is connected at its lower portion, to all the molds to be filled. 'There- Although the present invention has been described with reference to the accompanying drawings, it is understood that the de tails of construction and arrangement may be widely varied.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A molding apparatu includin a standard, a stationary pattern plate mounted substantially vertical on said standard, a pair of arms extendingsubstantially in a horizontal position from said standard, a flask vertieally supported on said arms and slidable therealong towards and away from said stationary plate, a pattern plate movably supported with respect to said stationary pattern plate and movable towards and away from said flask, pressure means for forcing said flask and said plate on both sides there of into close molding relationship, and spring means for separating said flask from its adjacent pattern plates upon the release of said pressure.

2. A molding apparatus including a pattern plate substantially stationary, a flask, means for supporting said flask on said machine into molding relationship with said sta tionary plate, said last mentioned means permitting slidable movement of said flask towards and awayv from said stationary pattern, a pattern plate movably supported with respect to said stationary pattern plate and adapted to be moved into molding relationship with the outer side of said flask, pressure means for pressing said movable plate, flask and stationary pattern plateinto close relationship, and means for gradually separating said plates and said flask as the pressure effected by said pressure means is released.

3. A molding apparatus including a pair of stationary interspaced pattern plates, means for supporting a flask in juxtaposed molding relationship with either of said pattern plates, an arm pivoted at a point between the two pattern plates, a plate pivotally mounted to said arm so as to be rotatable about its own axis and movable about the pivot axis of said arm, said latterplate having patterns on opposite sides thereof, and said arm being of such length that either of the patterns on said movable plate may be moved into molding relationship with the flask on the side thereof opposite'either one of said stationary plates.

4. A molding apparatus including two substantially stationary pattern plates, means on said machine for supporting a flask in juxtaposed relationship with respect to said pattern plates, and a pattern plate movably supported with respect to saidapparatus and adapted to be moved in opposite molding relationship with respect to either one of said first mentioned pattern plates.

5.'A molding apparatus including a pair of pattern plates substantially stationary, means for supporting a flask in juxtaposed molding relationship with either of said pat tern plates, an arm pivoted at a point be tween the twopattern plates, the pivot point of said arm between the two pattern plates being movable in a direction substantially at right angles to the two plates, a plate pivotally mounted at one end of said arm so as to be rotatable about its own axis and movable about the rotative axis of said arm, said plate having a pattern on one side thereof, and said arm being of such length that the pattern on said movable plate may be moved into molding relationship with either one of said stationary pattern plates.

6. A molding apparatus including a standard, a stationary pattern mounted substantially vertically on said standard, a pair of arms extending substantially in a horizontal direction from said standards in front of said pattern, a flask having projecting members extending outwardly from the vertical sides of the flask intermediate the ends thereof, said flask being supported on said arms in substantially vertical posifront of said pattern, a flask having projecting members extending outwardly from the vertical sides of the flask intermediate the ends thereof and supported on said arms in substantially vertical position, said flask being Slidable along d arms towards and T away from said pattern into molding relationship therewith, and means for forcing said flask and said pattern into close molding relationship.

8. A molding apparatus including means for supporting a pair of flasks vertically in interspaced relationship, an arm pivoted at a point between the mountable position of said flasks, and a vertical pattern plate pivotally mounted on said arm in a position whereby said pattern plate may be moved into molding relationship with either one of said flasks.

9. A molding apparatus including a pair of stationary interspaced pattern plates mounted substantially vertically, means for mounting flasks in molding relationship with said stationary plates, an arm pivoted at a point between said pattern plates, and a pattern plate pivotally mounted on said arm, whereby said last mentioned plate may be moved into molding relationship with either one of said flasks on the side of said flasksopposite said stationary plates.

10. A molding apparatus including means for mounting a pair of flasks vertically in interspaced relationship, an arm pivoted at a point between the mountable position of the two flasks, a plate pivotally mounted on said arm so as to be rotatable about its. own

porting a flask in molding relationship with axis, and movable about'the pivot axis of said arm, said plate having patterns mounted on both sides thereof, whereby either one of said patterns may be moved into molding relationship with either one of said flasks.

11. A molding apparatus including two pairs of interspaced arms extending substantially in a horizontal direction, each of frame structure having a vertical surface,

means for supporting a flask, and a pattern vertically in molding relationship with each other and against said vertical surface, a fluid pressure piston mounted on said frame structure, and adapted to move away from said surface when subjected to fluid pres sure, a pair of arms connected to said piston for movement therewith andextending on opposite sides of the molding position of said flask and said pattern, andmeans on said arms for holding said flask and said pattern against said surface in molding position under the pressure action of said piston. 13. A molding apparatus including a frame structure having a vertical surface, means for supporting a flask and a pattern vertically in molding relationship with each other and against said vertical surface, a fluid pressure piston mounted on said frame structure and adapted to move away from said surface when subjected to fluid pressure, a pair of arms connected to said piston for movement therewith, and extending on opp0- site sides of the molding position of said flask and said pattern, said arms being pivoted about vertical axes near sections where said arms are connected to the piston, whereby said arms may be swung towards or away from the vertical sides of said flaskand said pattern, and means on said arms for holding 7 said flaskand said pattern against said surface in moldingposition under the fluid action of said piston. v

14. A molding apparatus including a frame structure having mounted thereon a vertically extending pattern facing the front of said structure, means for vertically supsaid pattern, and adapted to move away from said pattern when subjected to fluid pressure, a pair of armsconnected to said piston for movement therewith, and mounted on opposite sides of said flask and pat tern, for holding said flask and pattern in molding relationship under the influence of said fluid pressure on said piston.

15. An apparatus for forming molds for the sections of a radiator, including a standard, a stationary pattern for the intermediate sections of the radiator, mounted substantially vertically on said standard, means for mounting a flask vertically in molding relationship with respect to said pattern, and

a plate having a pattern on one side thereof for the intermediatesections of said radiator, and a pattern on the other side forthe end sections of said radiator, said plate being movably mounted in respect, to said standard, so that either pattern thereon may be moved into molding relationship with said flask on the opposite side from said stationary plate.

Signed at Genoa, Italy, this second day of' April, 1930.

GESARE AIRAGHI. 

